longevity
Word family
- long-livedadjectiveB2
- longevousadjectiveC2
Synonym discussion
Sense: noun/1
Longevity is the most formal of these terms, often appearing in scientific or academic writing about the duration of life: 'researchers studying human longevity.' 'Long life' is the simplest, everyday expression and works in casual conversation: 'My grandmother had a long life.' 'Lifespan' is more neutral and specific — it refers to the average or maximum length of time a species or individual is expected to live: 'The average lifespan of a house cat is about fifteen years.' Within scientific contexts, 'longevity' also carries a statistical or genetic tone that 'long life' lacks. For example, a researcher would say 'factors affecting longevity' but not 'factors affecting long life,' which sounds too informal for a journal article.
Common collocations
Nouns
- factor in longevity
- research on longevity
- secret to longevity
- key to longevity
- study of longevity
Phrases
- longevity is associated with
- longevity depends on
- known for [its] longevity
Prepositions
- for [its] longevity
- of longevity
Etymology
Longevity comes from the Latin word 'longaevitas,' which is built from 'longus' (meaning long) and 'aevum' (meaning age or lifetime). It passed into English through French 'longévité' in the 1600s, and has been used ever since to describe unusually long life or lasting quality.